@ubnt/cawcut@0.3.0

CawCut developer CLI — auth, generate, app run, task status

AI Security Review

scanned 10d ago · by lpm-firewall-ai

The package automatically installs first-party agent skills during global installation and may bootstrap them on CLI use, creating an unresolved consent risk. The inspected source does not establish a concrete malicious attack, so this warrants a warning rather than a block.

Static reason

High-risk behavior combination matched malicious policy.; source matched previously finalized malicious package; routed for review

Trigger

A global package installation that runs postinstall, or a regular CLI invocation when the skills are missing.

Impact

Agent environments may receive package-provided skills without a separate explicit setup command.

Mechanism

The package runs npx skills to fetch and install named skills from its configured CawCut repository into global agent skill directories, using automatic confirmation in the postinstall path.

AI rationale

Evidence

package.jsondist/postinstall.jsdist/lib/is-global-install.jsdist/lib/skills-install.jsdist/lib/skills-agents.jsdist/lib/skills-source.jsdist/lib/bootstrap-skills.jsdist/index.js~/.cursor/skills~/.claude/skills~/.codex/skills~/.agents/skills

Network endpoints1

github.com

Decision evidence

public snapshot

AI called this Suspicious at 87.0% confidence as Dangerous Capability with medium false-positive risk.

Evidence for warning

package.json runs dist/postinstall.js after installation.
The postinstall invokes skill installation for global installs.
The installer runs npx skills add globally with automatic confirmation for CawCut skills and defaults to Cursor, Claude Code, and Codex.
The default skill source is cawcut/skill, and the installer targets agent skill directories under the user's home directory.
The CLI can also install the skills on a regular first invocation when they are missing.

Evidence against

The postinstall exits unless this is a global install and skips setup under CI or when CAWCUT_SKIP_SETUP is set.
The inspected code shows setup of named skills in skill directories; it does not show credential collection, exfiltration, or broad agent configuration changes.

Behavioral surface

Source

ChildProcessCryptoEnvironmentVarsFilesystemNetworkShell

Supply chain

HighEntropyStrings

Source & flagged code

8 flagged

package.jsonView file

Lines 1-40json

2 "name": "@ubnt/cawcut",

3 "version": "0.3.0",

4 "description": "CawCut developer CLI — auth, generate, app run, task status",

5 "type": "module",

6 "bin": {

7 "cawcut": "dist/index.js"

8 },

9 "main": "dist/index.js",

10 "files": [

11 "dist",

12 "config",

13 "assets"

14 ],

15 "scripts": {

16 "build:ts": "node scripts/build.mjs",

17 "build": "npm run build:ts",

18 "build:internal": "CAWCUT_BUILD_PROFILE=internal node scripts/build.mjs",

19 "prepare": "npm run build",

20 "postinstall": "node dist/postinstall.js",

High

Install Time Lifecycle Scripts

Package defines install-time lifecycle scripts.

package.jsonView on unpkg · L20

Medium

Ambiguous Install Lifecycle Script

Install-time lifecycle script is not statically allowlisted and needs review.

package.jsonView on unpkg · L20

21 "reinstall:global": "npm uninstall -g @ubnt/cawcut 2>/dev/null || true; npm install -g . --foreground-scripts --allow-scripts=@ubnt/cawcut",

22 "test": "vitest run",

23 "verify:package": "node scripts/verify-npm-package.mjs",

24 "release:check": "npm run test && npm run build && npm run verify:package",

25 "prepublishOnly": "node scripts/assert-release-ci.mjs && npm run release:check"

26 },

27 "dependencies": {

28 "commander": "^13.1.0"

29 },

30 "devDependencies": {

31 "@types/node": "^22.15.0",

32 "typescript": "^5.8.3",

33 "vitest": "^3.1.4"

34 },

35 "engines": {

36 "node": ">=20"

37 },

38 "license": "MIT"

39}

dist/lib/uninstall-cawcut.jsView file

Lines 1-21javascript

1import { spawnSync } from "node:child_process";

2import { dirname } from "node:path";

High

Child Process

Package source references child process execution.

dist/lib/uninstall-cawcut.jsView on unpkg · L1

3import { fileURLToPath } from "node:url";

dist/lib/vn-media.jsView file

Lines 1-21javascript

1import { createHash } from "node:crypto";

2import { execFile } from "node:child_process";

3import { copyFile, mkdir, open, readFile, stat } from "node:fs/promises";

Low

Weak Crypto

Package source references weak cryptographic algorithms.

dist/lib/vn-media.jsView on unpkg · L1

dist/lib/skills-agents.jsView file

Lines 1-21javascript

1import { existsSync } from "node:fs";

2import { homedir } from "node:os";

3import { join } from "node:path";

4import { ALL_SKILL_NAMES, PUBLIC_SKILL_NAMES } from "./release-surface.js";

dist/lib/skills-install.jsView file

Lines 14-54javascript

14function openInteractiveStdinFd() {

15 if (process.stdin.isTTY) {

16 return undefined;

17 }

18 if (process.platform === "win32") {

dist/lib/vn.js#virtual:normalized:round1View file

•stage = ast_semantic_analysis; reason = ast_parse_error; limitedFiles = 1

High

Semantic Analysis Limited

A bounded semantic-analysis stage reached its safety limit; remaining detectors completed, but this package requires AI review.

dist/lib/vn.js#virtual:normalized:round1View on unpkg

dist/lib/is-global-install.jsView file

•matchType = normalized_sha256 matchedPackage = @ubnt/cawcut@0.1.5 matchedPath = dist/lib/is-global-install.js matchedIdentity = npm:QHVibnQvY2F3Y3V0:0.1.5 similarity = 1.000 summary = normalized source hash matched finalized malicious source

High

Known Malware Source Similarity

Source file is highly similar to a previously finalized malicious package; route for source-aware review.

dist/lib/is-global-install.jsView on unpkg

Source & flagged code

8 flagged · loading source

package.jsonView file

•scripts.postinstall = node dist/postinstall.js

High

Install Time Lifecycle Scripts

Package defines install-time lifecycle scripts.

package.jsonView on unpkg

•scripts.postinstall = node dist/postinstall.js

Medium

Ambiguous Install Lifecycle Script

Install-time lifecycle script is not statically allowlisted and needs review.

package.jsonView on unpkg

dist/lib/uninstall-cawcut.jsView file

1import { spawnSync } from "node:child_process"; L2: import { dirname } from "node:path";

High

Child Process

Package source references child process execution.

dist/lib/uninstall-cawcut.jsView on unpkg · L1

Findings

1 Critical6 High4 Medium6 Low

CriticalAi Agent Control Hijackdist/lib/skills-agents.js

HighInstall Time Lifecycle Scriptspackage.json

HighChild Processdist/lib/uninstall-cawcut.js

HighShell

HighRuntime Package Installdist/lib/skills-install.js

HighSemantic Analysis Limiteddist/lib/vn.js#virtual:normalized:round1

HighKnown Malware Source Similaritydist/lib/is-global-install.js

MediumAmbiguous Install Lifecycle Scriptpackage.json

MediumNetwork

MediumEnvironment Vars

MediumStructural Risk Force Deep Review

LowNon Install Lifecycle Scripts

LowScripts Present

Affected versions and remediation

This report applies to @ubnt/cawcut@0.3.0.

See all versions of @ubnt/cawcut for other recorded verdicts.

Review the evidence and your use of @ubnt/cawcut@0.3.0 before allowing it. Restrict the permissions described in this report.
Choose an independently verified alternative or release. This report does not establish that other versions are safe.

Evidence last updated: 2026-10-12 21:09:14.644Z (UTC).

Think this verdict is wrong? Dispute it on GitHub or read how reports are produced.